How do I write a consent letter for my child to travel? A child travel consent form allows a minor to travel alone or with another person or group.Your child will need a Child Travel Consent any time they're traveling without all their parents or legal guardians present. 1. Document Header - Begin with a clear and descriptive title, like "Child Travel Consent Form. For what are you asking permission? Make sure the consent letter clearly indicates whether the permission is to travel out-of-state or abroad. Passport control would generally be the ones asking. However, airlines can also ask for it. A notarized letter of consent is a crucial requirement when traveling with minors without both parents or guardians. Log in online to "My Disney Cruise" and then "My Online CheckIn" and you'll find the form that he needs to sign and have notarized.